Mmcp.market

spec-driven-development skill

by a5c-ai·a5c-ai/babysitter·1.8k stars·MIT

Specification creation and management for the Pilot Shell methodology. Covers semantic search, clarifying questions, structured spec generation, and iterative refinement.

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Install the spec-driven-development skill

A skill is a folder. Copy it into your agent's skills folder and the agent loads it when the task matches its description. 

git clone --depth 1 https://github.com/a5c-ai/babysitter.git /tmp/babysitter
mkdir -p ~/.claude/skills
cp -r /tmp/babysitter/library/methodologies/pilot-shell/skills/spec-driven-development ~/.claude/skills/spec-driven-development
available in every project

In the Claude apps, zip the folder and upload it from the Skills settings. The folder on GitHub

The instructions your agent would load

SKILL.md as published, without the frontmatter. Read it on GitHub

  • Search for files and code related to the task description
  • Identify existing patterns that the spec should follow
  • Map the impact area of proposed changes
  • Generate SEARCH-CONTEXT.md with findings

2. Clarifying Question Resolution

  • Identify ambiguities in the task description
  • Generate targeted clarifying questions
  • Resolve assumptions with explicit choices
  • Document decisions for traceability

3. Spec Generation

  • Structure specs with: title, goals, tasks, acceptance criteria
  • Decompose into atomic, testable tasks
  • Define dependency graphs between tasks
  • Include rollback plans and risk assessments
  • Generate SPEC.md document

4. Iterative Refinement

  • Accept plan-reviewer feedback
  • Apply revision requests by severity
  • Refine task decomposition
  • Update acceptance criteria

Spec Structure

# Specification: [Title]

## Goals
- [ ] Goal 1 with measurable outcome

## Tasks
### Task 1: [Description]
- **Acceptance Criteria**: ...
- **Test Strategy**: RED->GREEN->REFACTOR
- **Complexity**: low/medium/high
- **Dependencies**: [task-ids]

## Assumptions
- Assumption 1 (validated: yes/no)

## Risks
- Risk 1: Mitigation strategy

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